Preparation
2-Aminobenzenesulfonic acid diazotization, and 2,5-Dimethylbenzenamine coupling, product to diazotization, and N-methyl-N-(3-carboxy-4-hydroxyphenylsulfonyl)-1-amino-8-hydroxy-3,6-naphthalenedisulfonic acid?coupling.
Properties and Applications
purple. Soluble in water for red light purple, slightly soluble in ethanol for red light purple. To Turquoise Blue in concentrated sulfuric acid, after dilution for red light purple. Dye aqueous solution to join concentrated hydrochloric acid for red light purple; Join concentrated sodium hydroxide solution for purple.
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Standard(cotton)
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Ironing Fastness
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Water
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Alkali
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Acid
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ISO
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3
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4
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